TWI524129B - Illumination system and projection apparatus - Google Patents
Illumination system and projection apparatus Download PDFInfo
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- TWI524129B TWI524129B TW102142498A TW102142498A TWI524129B TW I524129 B TWI524129 B TW I524129B TW 102142498 A TW102142498 A TW 102142498A TW 102142498 A TW102142498 A TW 102142498A TW I524129 B TWI524129 B TW I524129B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
本發明是有關於一種光學系統與顯示裝置，且特別是有關於一種照明系統以及投影裝置。 The present invention relates to an optical system and a display device, and more particularly to an illumination system and a projection device.
近年來以發光二極體(light-emitting diode,LED)和雷射二極體(laser diode)等固態光源為主的投影裝置漸漸在市場上占有一席之地。由於雷射二極體具有高於約20%的發光效率，為了突破發光二極體的光源限制，因此漸漸發展了以雷射光源激發螢光粉而產生投影機所需用的純色光源。此外，雷射投影裝置除了可以使用雷射光源激發螢光粉發光外，亦可直接以雷射光作為投影機照明光源，並具有因應亮度需求而調整光源數目的優點，以達到各種不同亮度的投影機需求。因此，採用雷射光源的光源系統的投影機架構具有非常大的潛力能夠取代傳統高壓汞燈的方式，而成為新一代主流投影機之光源。 In recent years, projection devices mainly based on solid-state light sources such as light-emitting diodes (LEDs) and laser diodes have gradually gained a place in the market. Since the laser diode has a luminous efficiency higher than about 20%, in order to break the light source limitation of the light-emitting diode, a pure color light source for generating a projector by exciting the fluorescent powder with a laser light source has been gradually developed. In addition, the laser projection device can use the laser light source to excite the fluorescent powder, and can directly use the laser light as the projector illumination source, and has the advantage of adjusting the number of the light source according to the brightness requirement, so as to achieve projection of various brightnesses. Machine requirements. Therefore, the projector architecture of a light source system using a laser source has a great potential to replace the traditional high-pressure mercury lamp and become the light source of a new generation of mainstream projectors.
一種習知的雷射投影機使用多顆的雷射陣列並將其聚焦於螢光粉層上，以產生足夠的輸出螢光強度。然而，半導體雷射 所形成之光斑近似於橢圓形，且其光強度分佈近似於高斯分佈(Gaussian distribution)。另一方面，雷射光激發螢光粉後所發出的光束之光斑則是近似於圓形，且其光強度近似於朗伯分佈(Lambertian distribution)。當雷射光束與螢光粉被激發後所發出的光束被合光時，由於光斑形狀不同且光強度形狀不同，將導致不均勻的照明，進而使雷射投影裝置所投影出的顯示畫面之色彩不均勻。 A conventional laser projector uses a plurality of laser arrays and focuses them onto a phosphor layer to produce sufficient output fluorescence intensity. However, semiconductor laser The resulting spot is approximately elliptical in shape and its light intensity distribution approximates a Gaussian distribution. On the other hand, the spot of the beam emitted by the laser light after exciting the phosphor is approximately circular, and its light intensity is similar to the Lambertian distribution. When the laser beam emitted by the laser beam and the phosphor powder is combined, the shape of the spot is different and the shape of the light intensity is different, which will result in uneven illumination, and thus the display image projected by the laser projection device. The color is uneven.
另一方面，由於光強度近似於高斯分佈的雷射光束所形成的光斑之中央的單位面積光強度較強，這可能會使得螢光粉的螢光轉換效率達到飽和而難以再提升，這會使雷射投影機的影像畫面的亮度難以再提升。另外，光強度過於集中的光斑亦較有可能會燒損螢光粉或導致螢光粉的使用壽命縮短。 On the other hand, since the light intensity is higher than the light intensity per unit area in the center of the spot formed by the laser beam having a Gaussian distribution, this may cause the fluorescence conversion efficiency of the phosphor powder to be saturated and difficult to increase again. The brightness of the image of the laser projector is difficult to increase. In addition, the spot where the light intensity is too concentrated is more likely to burn the phosphor powder or shorten the service life of the phosphor powder.
中華民國專利公開第201235618號揭露一種具有激發光源的光源裝置。美國專利第8109638號揭露了一種投影機。美國專利第6870650號揭露了雷射光束經過擴散片後在水平方向與垂直方向的擴散角度不同。美國專利第7271962號揭露了影像形成架構。 A light source device having an excitation light source is disclosed in the Republic of China Patent Publication No. 201235618. A projector is disclosed in U.S. Patent No. 8,109,638. U.S. Patent No. 6,870,650 discloses a different angle of diffusion of a laser beam in a horizontal direction and a vertical direction after passing through a diffusion sheet. The image forming architecture is disclosed in U.S. Patent No. 7,271,962.
本發明提供一種照明系統，具有較均勻的照明均勻度、較佳的光效率與較長的使用壽命。 The invention provides an illumination system with relatively uniform illumination uniformity, better light efficiency and a longer service life.
本發明提供一種投影裝置，具有較佳的影像品質、較佳 的光效率與較長的使用壽命。 The invention provides a projection device with better image quality and better Light efficiency and long life.
本發明的其他目的和優點可以從本發明所揭露的技術特徵中得到進一步的了解。 Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.
為達上述之一或部份或全部目的或是其他目的，本發明的一實施例提出一種照明系統，包括至少一雷射光源、一波長轉換元件及一二維非等向性擴散片。雷射光源發出一雷射光束，且波長轉換元件位於雷射光束的傳遞路徑上。二維非等向性擴散片位於雷射光束的傳遞路徑上，且位於雷射光源與波長轉換元件之間。二維非等向性擴散片使雷射光束在一第一方向上的發散角增加程度大於在一第二方向上的發散角增加程度，且第一方向實質上平行於雷射光束的慢速軸(slow axis)。 To achieve one or a portion or all of the above or other objects, an embodiment of the present invention provides an illumination system including at least one laser source, a wavelength conversion element, and a two-dimensional anisotropic diffusion sheet. The laser source emits a laser beam and the wavelength conversion element is located in the transmission path of the laser beam. The two-dimensional anisotropic diffusion sheet is located on the transmission path of the laser beam and is located between the laser source and the wavelength conversion element. The two-dimensional anisotropic diffuser increases the divergence angle of the laser beam in a first direction to a greater extent than the divergence angle in a second direction, and the first direction is substantially parallel to the slow speed of the laser beam. Slow axis.
本發明的一實施例提出一種投影裝置，包括一照明系統、一光閥及一投影鏡頭。照明系統包括至少一雷射光源、至少一二維非等向性擴散片及一波長轉換元件。雷射光源發出一雷射光束。二維非等向性擴散片位於雷射光束的傳遞路徑上，並使雷射光束在一第一方向上的發散角增加程度大於在一第二方向上的發散角增加程度，其中第一方向實質上平行於雷射光束的慢速軸。波長轉換元件位於來自二維非等向性擴散片的雷射光束的傳遞路徑上。波長轉換元件包括至少一波長轉換區以及至少一光穿透區，波長轉換區以及光穿透區適於運動，以輪流切入雷射光束的傳遞路徑上。當光穿透區切入雷射光束的傳遞路徑上時，雷射光束穿透波長轉換元件。當波長轉換區切入雷射光束的傳遞路徑 上時，雷射光束被波長轉換區轉換為轉換光束。光閥配置於雷射光束與轉換光束的傳遞路徑上，且用以將雷射光束與轉換光束轉換為一影像光束。投影鏡頭配置於影像光束的傳遞路徑上。 An embodiment of the invention provides a projection apparatus including an illumination system, a light valve, and a projection lens. The illumination system includes at least one laser source, at least one two-dimensional anisotropic diffusion sheet, and a wavelength conversion element. The laser source emits a laser beam. The two-dimensional anisotropic diffusion sheet is located on the transmission path of the laser beam, and increases the divergence angle of the laser beam in a first direction to be greater than the divergence angle in a second direction, wherein the first direction It is substantially parallel to the slow axis of the laser beam. The wavelength conversion element is located on the transmission path of the laser beam from the two-dimensional anisotropic diffusion sheet. The wavelength conversion element includes at least one wavelength conversion region and at least one light transmission region, and the wavelength conversion region and the light transmission region are adapted to move to alternately cut into the transmission path of the laser beam. When the light penetrating region cuts into the transmission path of the laser beam, the laser beam penetrates the wavelength conversion element. When the wavelength conversion region cuts into the transmission path of the laser beam In the upper direction, the laser beam is converted into a converted beam by the wavelength conversion region. The light valve is disposed on the transmission path of the laser beam and the converted beam, and is used to convert the laser beam and the converted beam into an image beam. The projection lens is disposed on the transmission path of the image beam.
本發明的實施例可達到下列優點與功效的至少其中之一。在本發明的實施例的照明系統與投影裝置中，二維非等向性擴散片使雷射光束在慢速軸的方向上有較大的發散角增加程度，進而使得照射於波長轉換元件上的光斑較為近似圓形光斑，且其分佈較為近似朗伯分佈(Lambertian distribution)。如此一來，照明系統便可提供較為均勻的照明，且照射於波長轉換元件上的光斑較不會因為中心強度過強，而導致波長轉換元件的轉換效率飽和而難以提升，或導致波長轉換元件燒損。因此，本發明的實施例的投影裝置可提供較佳的影像品質，且具有較佳的光效率與較長的使用壽命。 Embodiments of the present invention can achieve at least one of the following advantages and benefits. In the illumination system and the projection apparatus of the embodiment of the present invention, the two-dimensional anisotropic diffusion sheet causes the laser beam to have a large divergence angle increase in the direction of the slow axis, thereby causing illumination onto the wavelength conversion element. The spot is more similar to a circular spot, and its distribution is similar to the Lambertian distribution. In this way, the illumination system can provide relatively uniform illumination, and the spot irradiated on the wavelength conversion component is less likely to be too strong due to the center strength, so that the conversion efficiency of the wavelength conversion component is saturated and difficult to be improved, or the wavelength conversion component is caused. Burnt. Therefore, the projection apparatus of the embodiment of the present invention can provide better image quality, and has better light efficiency and a longer service life.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 The above described features and advantages of the invention will be apparent from the following description.
50‧‧‧光斑 50‧‧‧ spot
60‧‧‧雷射光束 60‧‧‧Laser beam
70‧‧‧轉換光束 70‧‧‧Converting beam
80‧‧‧影像光束 80‧‧‧Image beam
90、141、143、145‧‧‧透鏡 90, 141, 143, 145‧‧ lens
92‧‧‧反射鏡 92‧‧‧Mirror
94‧‧‧聚光透鏡 94‧‧‧ Concentrating lens
100‧‧‧照明系統 100‧‧‧Lighting system
110‧‧‧雷射光源 110‧‧‧Laser light source
120、120a‧‧‧二維非等向性擴散片 120, 120a‧‧‧2D anisotropic diffuser
122‧‧‧第一表面 122‧‧‧ first surface
124‧‧‧第二表面 124‧‧‧ second surface
126‧‧‧橢球狀凹槽 126‧‧‧ ellipsoidal groove
130‧‧‧波長轉換元件 130‧‧‧wavelength conversion components
131a、131b‧‧‧波長轉換區 131a, 131b‧‧‧ wavelength conversion zone
133‧‧‧光穿透區 133‧‧‧Light penetration zone
150‧‧‧合光單元 150‧‧‧Hybrid unit
160‧‧‧光傳遞模組 160‧‧‧Light Transfer Module
170‧‧‧光均勻化元件 170‧‧‧Light homogenizing components
180‧‧‧致動器 180‧‧‧Actuator
200‧‧‧投影裝置 200‧‧‧Projection device
210‧‧‧光閥 210‧‧‧Light valve
220‧‧‧投影鏡頭 220‧‧‧Projection lens
A1、A3‧‧‧長軸 A1, A3‧‧‧ long axis
A2、A4‧‧‧短軸 A2, A4‧‧‧ short axis
x、y、z‧‧‧方向 x, y, z‧‧ direction
圖1是本發明一實施例的一種投影裝置的架構示意圖。 FIG. 1 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention.
圖2是圖1的波長轉換元件130的正視示意圖。 2 is a front elevational view of the wavelength conversion element 130 of FIG. 1.
圖3A為圖1中的二維非等向性擴散片的一種實施例的立體示意圖。 3A is a perspective view of an embodiment of the two-dimensional anisotropic diffusion sheet of FIG. 1.
圖3B為圖3A中的二維非等向性擴散片的剖面示意圖。 3B is a schematic cross-sectional view of the two-dimensional anisotropic diffusion sheet of FIG. 3A.
有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之一較佳實施例的詳細說明中，將可清楚的呈現。以下實施例中所提到的方向用語，例如：上、下、左、右、前或後等，僅是參考附加圖式的方向。因此，使用的方向用語是用來說明並非用來限制本發明。 The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.
圖1是本發明一實施例的一種投影裝置的架構示意圖。請參照圖1，本實施例的投影裝置200包括一照明系統100、一光閥210以及一投影鏡頭220。在本實施例中，光閥210例如為一數位微鏡元件(digital micro-mirror device,DMD)或一矽基液晶面板(liquid-crystal-on-silicon panel,LCOS panel)。然而，在其他實施例中，光閥210亦可以是穿透式液晶面板或其他空間光調變器。 FIG. 1 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention. Referring to FIG. 1 , the projection apparatus 200 of the embodiment includes an illumination system 100 , a light valve 210 , and a projection lens 220 . In the present embodiment, the light valve 210 is, for example, a digital micro-mirror device (DMD) or a liquid-crystal-on-silicon panel (LCOS panel). However, in other embodiments, the light valve 210 can also be a transmissive liquid crystal panel or other spatial light modulator.
具體而言，在本實施例中，照明系統100包括至少一雷射光源110、一二維非等向性擴散片120以及一波長轉換元件130。在本實施例中，雷射光源110為半導體雷射光源，例如為雷射二極體。舉例而言，雷射光源110例如可為藍光雷射二極體陣列(Blue Laser diode Bank)，雷射光束60則為藍光雷射光束，而波長轉換元件130為一波長轉換輪，但本發明不以此為限。此外，波長轉換元件130位於雷射光束60的傳遞路徑上。二維非等向性擴散片120位於雷射光束60的傳遞路徑上，且位於雷射光源110 與波長轉換元件130之間。更詳細而言，在本實施例中，照明系統100更包括多個透鏡141、143、145，位於雷射光源110與波長轉換元件130之間，二維非等向性擴散片120則位於透鏡143與透鏡145之間，而雷射光束60則可經由二維非等向性擴散片120傳遞至波長轉換元件130。在另一實施例中，二維非等向性擴散片120亦可配置於透鏡141與透鏡143之間。 Specifically, in the present embodiment, the illumination system 100 includes at least one laser light source 110, a two-dimensional anisotropic diffusion sheet 120, and a wavelength conversion element 130. In the present embodiment, the laser source 110 is a semiconductor laser source, such as a laser diode. For example, the laser light source 110 can be, for example, a blue laser diode bank, the laser beam 60 is a blue laser beam, and the wavelength conversion element 130 is a wavelength conversion wheel, but the present invention Not limited to this. Further, the wavelength conversion element 130 is located on the transmission path of the laser beam 60. The two-dimensional anisotropic diffusion sheet 120 is located on the transmission path of the laser beam 60 and is located at the laser source 110 Between the wavelength conversion element 130 and the wavelength conversion element 130. In more detail, in the embodiment, the illumination system 100 further includes a plurality of lenses 141, 143, 145 between the laser source 110 and the wavelength conversion element 130, and the two-dimensional anisotropic diffusion sheet 120 is located at the lens. 143 is interposed between the lens 145 and the laser beam 60 is transmitted to the wavelength conversion element 130 via the two-dimensional anisotropic diffusion sheet 120. In another embodiment, the two-dimensional anisotropic diffusion sheet 120 may also be disposed between the lens 141 and the lens 143.
進一步而言，在本實施例中，雷射光源110發出一雷射光束60。一般而言，當雷射光束從雷射光源110的發光面離開時，發散角會有快速軸(即雷射光束60的長軸，雷射光束60在長軸方向上的發散角較大)及慢速軸(即雷射光束60的短軸，雷射光束在短軸方向上的發散角較小)之別。換言之，雷射光源110的發光面發射出來的光束會形成一橢圓錐，而二維非等向性擴散片120可使雷射光束60在一第一方向(如圖1中的x方向)上的發散角增加程度大於在一第二方向(如圖1中的y方向)上的發散角增加程度，其中第一方向(x方向)實質上平行於雷射光束60的慢速軸。也就是說，二維非等向性擴散片120在第一方向(x方向)上的擴散能力大於在第二方向(y方向)上的擴散能力。如此一來，當沒有採用二維非等向性擴散片120時，雷射光束60會在波長轉換元件130上形成橢圓光斑，且此橢圓光斑的短軸實質上平行於第一方向(x方向)，而其長軸實質上平行於第二方向(y方向)；然而，當採用二維非等向性擴散片120時，由於雷射光束60於第一方向(x方向)上的發散角增加程度較大，因此雷射光 束60在波長轉換元件130上所形成的光斑會較接近圓形光斑。在本實施例中，第一方向(x方向)實質上垂直於第二方向(y方向)，且z方向垂直於x方向與y方向，其中z方向例如為二維非等向性擴散片120的法線方向。此外，在本實施例中，雷射光束60的快速軸實質上平行於第二方向(y方向)。在一實施例中，當雷射光束60通過二維非等向性擴散片120後，雷射光束60在第一方向(x方向)上的發散角近似於或實質上等於雷射光束60在第二方向(y方向)上的發散角，因此雷射光束60可形成近似於圓形的光斑。 Further, in the present embodiment, the laser source 110 emits a laser beam 60. In general, when the laser beam exits from the light emitting surface of the laser source 110, the divergence angle has a fast axis (i.e., the long axis of the laser beam 60, and the divergence angle of the laser beam 60 in the long axis direction is large). And the slow axis (ie, the short axis of the laser beam 60, the divergence angle of the laser beam in the short axis direction is small). In other words, the beam emitted from the light emitting surface of the laser source 110 forms an elliptical cone, and the two-dimensional anisotropic diffuser 120 allows the laser beam 60 to be in a first direction (as in the x direction of FIG. 1). The divergence angle is increased to a greater extent than the divergence angle in a second direction (the y-direction in FIG. 1), wherein the first direction (x-direction) is substantially parallel to the slow axis of the laser beam 60. That is, the diffusion ability of the two-dimensional anisotropic diffusion sheet 120 in the first direction (x direction) is greater than that in the second direction (y direction). As such, when the two-dimensional anisotropic diffusion sheet 120 is not employed, the laser beam 60 forms an elliptical spot on the wavelength conversion element 130, and the minor axis of the elliptical spot is substantially parallel to the first direction (x direction) And its long axis is substantially parallel to the second direction (y direction); however, when the two-dimensional anisotropic diffusion sheet 120 is employed, due to the divergence angle of the laser beam 60 in the first direction (x direction) Increased degree, so laser light The spot formed by beam 60 on wavelength converting element 130 will be closer to a circular spot. In the present embodiment, the first direction (x direction) is substantially perpendicular to the second direction (y direction), and the z direction is perpendicular to the x direction and the y direction, wherein the z direction is, for example, a two-dimensional anisotropic diffusion sheet 120. The normal direction. Further, in the present embodiment, the fast axis of the laser beam 60 is substantially parallel to the second direction (y direction). In one embodiment, when the laser beam 60 passes through the two-dimensional anisotropic diffuser 120, the divergence angle of the laser beam 60 in the first direction (x direction) is approximately or substantially equal to that of the laser beam 60. The divergence angle in the second direction (y direction), so the laser beam 60 can form a spot that approximates a circle.
接著，請再次參照圖1，在本實施例中，照明系統100更包括一合光單元150，位於至少一雷射光源110與波長轉換元件130之間，且位於穿透波長轉換元件130的雷射光束60的傳遞路徑上。具體而言，合光單元150為一分色鏡或一分色稜鏡，而可對不同顏色的光束提供不同的光學作用。舉例而言，在本實施例中，合光單元150例如可讓藍色光束穿透，而對其他顏色(如紅色、綠色、黃色等)的光束提供反射作用。也就是說，在本實施例中，合光單元150可讓雷射光束60穿透，如此一來，雷射光束60可穿透合光單元150並入射至波長轉換元件130。 Next, referring to FIG. 1 again, in the embodiment, the illumination system 100 further includes a light combining unit 150 located between the at least one laser light source 110 and the wavelength conversion component 130 and located at the thunder of the wavelength conversion component 130. The path of the beam 60 is transmitted. Specifically, the light combining unit 150 is a dichroic mirror or a color separation pupil, and can provide different optical effects on light beams of different colors. For example, in the present embodiment, the light combining unit 150 can, for example, allow the blue light beam to penetrate while providing a reflection effect on the light beams of other colors (such as red, green, yellow, etc.). That is to say, in the present embodiment, the light combining unit 150 can penetrate the laser beam 60, and thus, the laser beam 60 can penetrate the light combining unit 150 and be incident on the wavelength conversion element 130.
圖2是圖1的波長轉換元件130的正視示意圖，為一可旋轉的盤狀元件。另一方面，如圖1所示，波長轉換元件130位於雷射光束60的傳遞路徑上，且照明系統100更包括一光均勻化元件170，位於雷射光束60的傳遞路徑上。更詳細而言，如圖2 所示，在本實施例中，波長轉換元件130並包括至少一波長轉換區131a、131b以及至少一光穿透區133。舉例而言，在本實施例中，每一波長轉換區131a、131b包括一反射板及配置於反射板上的一螢光粉層(未繪示)所形成的螢光粉區，其中波長轉換區131a、131b所包括的螢光粉層與雷射光束60顏色不同。舉例而言，波長轉換區131a、131b所包括的螢光粉層的顏色例如分別可為紅色與綠色。至少一波長轉換區131a、131b以及至少一光穿透區133適於運動，以輪流切入雷射光束60的傳遞路徑上。 2 is a front elevational view of the wavelength conversion element 130 of FIG. 1 as a rotatable disk element. On the other hand, as shown in FIG. 1, the wavelength conversion element 130 is located on the transmission path of the laser beam 60, and the illumination system 100 further includes a light homogenizing element 170 located on the transmission path of the laser beam 60. In more detail, as shown in Figure 2 As shown, in the present embodiment, the wavelength conversion element 130 includes at least one wavelength conversion region 131a, 131b and at least one light transmission region 133. For example, in this embodiment, each of the wavelength conversion regions 131a and 131b includes a reflective plate and a phosphor powder layer (not shown) disposed on the reflective plate, wherein the wavelength conversion is performed. The phosphor layers included in the regions 131a, 131b are different in color from the laser beam 60. For example, the color of the phosphor layer included in the wavelength conversion regions 131a, 131b may be, for example, red and green, respectively. The at least one wavelength conversion region 131a, 131b and the at least one light penetrating region 133 are adapted to move to alternately cut into the transmission path of the laser beam 60.
當至少一波長轉換區131a、131b輪流切入雷射光束60的傳遞路徑上時，雷射光束60被至少一波長轉換區131a、131b分別轉換為紅色或綠色的至少一轉換光束70，且至少一轉換光束70則可被波長轉換元件130反射。另一方面，如圖1所示，合光單元150位於至少一轉換光束70的傳遞路徑上，因此至少一轉換光束70會被傳遞至合光單元150。 When at least one of the wavelength conversion regions 131a, 131b is alternately cut into the transmission path of the laser beam 60, the laser beam 60 is converted into at least one converted beam 70 of red or green by at least one of the wavelength conversion regions 131a, 131b, and at least one The converted beam 70 can then be reflected by the wavelength conversion element 130. On the other hand, as shown in FIG. 1, the light combining unit 150 is located on the transmission path of the at least one converted light beam 70, so that at least one converted light beam 70 is transmitted to the light combining unit 150.
當至少一光穿透區133切入雷射光束60的傳遞路徑上時，雷射光束60穿透波長轉換元件130，並經由一光傳遞模組160傳遞至合光單元150，並穿透合光單元150而傳遞至光均勻化元件170。在本實施例中，光傳遞模組160包括多個透鏡90與配置於這些透鏡90之間的反射鏡92，以將穿透波長轉換元件130的雷射光束60轉折並傳遞回合光單元150。 When at least one light penetrating region 133 is cut into the transmission path of the laser beam 60, the laser beam 60 penetrates the wavelength conversion element 130, is transmitted to the light combining unit 150 via a light transmission module 160, and penetrates the light. Unit 150 is passed to light homogenizing element 170. In the present embodiment, the light transmitting module 160 includes a plurality of lenses 90 and a mirror 92 disposed between the lenses 90 to deflect and transmit the laser beam 60 penetrating the wavelength converting element 130 back to the light combining unit 150.
此外，至少一轉換光束70與雷射光束60的顏色彼此不同，因此被傳遞至合光單元150將可被反射至光均勻化元件170。 如此一來，當至少一波長轉換區131a、131b以及至少一光穿透區133切入雷射光束的傳遞路徑上時，照射於波長轉換元件130上的雷射光束60便可依序被轉換成多種不同顏色，並傳遞至光均勻化元件170中。 Furthermore, the colors of the at least one converted beam 70 and the laser beam 60 are different from each other, and thus transferred to the light combining unit 150 will be reflected to the light homogenizing element 170. In this way, when the at least one wavelength conversion region 131a, 131b and the at least one light transmission region 133 are cut into the transmission path of the laser beam, the laser beam 60 irradiated on the wavelength conversion element 130 can be sequentially converted into A plurality of different colors are delivered to the light homogenizing element 170.
在本實施例中，合光單元150為一分色單元，此分色單元位於來自雷射光源110的雷射光束60的傳遞路徑上，分色單元將來自雷射光源110的雷射光束60傳遞至波長轉換元件130，且分色單元將至少一轉換光束70與穿透波長轉換元件130的雷射光束60合併。 In the present embodiment, the light combining unit 150 is a color separation unit located on the transmission path of the laser beam 60 from the laser source 110, and the color separation unit will be the laser beam 60 from the laser source 110. Passed to the wavelength conversion element 130, and the color separation unit combines at least one converted beam 70 with the laser beam 60 that penetrates the wavelength conversion element 130.
需說明的是，上述的合光單元150在本實施例中為一讓藍色光束穿透，而對其他顏色(如紅色、綠色等)的光束提供反射作用的分色鏡或分色稜鏡為例示，但本發明不以此為限。在其他實施例中，合光單元150亦為一可對藍色光束提供反射作用，而讓其他顏色(如紅色、綠色等)的光束穿透的分色鏡或分色稜鏡。此技術領域中具有通常知識者當可依據實際需求來對雷射光束60與轉換光束70搭配適當的光路設計後，亦可使合光單元150達到類似的合光效果，在此就不予贅述。 It should be noted that, in the embodiment, the light combining unit 150 is a dichroic mirror or a color separation mirror that allows a blue light beam to penetrate and provides a reflection effect on light beams of other colors (such as red, green, etc.). As an example, the invention is not limited thereto. In other embodiments, the light combining unit 150 is also a dichroic mirror or a color separation pupil that can provide a reflection to the blue light beam and a light beam of other colors (such as red, green, etc.). A person skilled in the art can use the appropriate optical path design for the laser beam 60 and the converted beam 70 according to actual needs, and the light combining unit 150 can also achieve a similar light combining effect, and will not be described herein. .
此外，如圖1所示，當雷射光束60及轉換光束70經由照明系統100傳遞至光均勻化元件170時，光均勻化元件170可使這些不同顏色的雷射光束60及轉換光束70均勻化，並使其傳遞至光閥210。在本實施例中，光均勻化元件170例如為一光積分柱(light integration rod)，而聚光透鏡94將來自合光單元150的 雷射光束60與轉換光束70會聚於光積分柱的入口處。光閥210配置於雷射光束60與轉換光束70的傳遞路徑上，以將雷射光束60與轉換光束70轉換為一影像光束80。投影鏡頭220配置於影像光束80的傳遞路徑上，並用以將影像光束80投影至一屏幕(未繪示)上，以形成影像畫面。由於這些不同顏色的雷射光束60及轉換光束70匯聚在光閥210上後，光閥210依序將不同顏色的雷射光束60及轉換光束70轉換成不同顏色的影像光束80傳遞至投影鏡頭220，因此，光閥210所轉換出的影像光束80所被投影出的影像畫面便能夠成為彩色畫面。 Furthermore, as shown in FIG. 1, when the laser beam 60 and the converted beam 70 are transmitted to the light homogenizing element 170 via the illumination system 100, the light homogenizing element 170 can uniformize the laser beam 60 and the converted beam 70 of these different colors. And pass it to the light valve 210. In the present embodiment, the light homogenizing element 170 is, for example, a light integration rod, and the collecting lens 94 will be from the light combining unit 150. The laser beam 60 and the converted beam 70 converge at the entrance of the light integrator column. The light valve 210 is disposed on the transmission path of the laser beam 60 and the converted beam 70 to convert the laser beam 60 and the converted beam 70 into an image beam 80. The projection lens 220 is disposed on the transmission path of the image beam 80 and is used to project the image beam 80 onto a screen (not shown) to form an image frame. Since the different colors of the laser beam 60 and the converted beam 70 are concentrated on the light valve 210, the light valve 210 sequentially converts the different colors of the laser beam 60 and the converted beam 70 into different color image beams 80 to be transmitted to the projection lens. 220, therefore, the image frame projected by the image beam 80 converted by the light valve 210 can be a color picture.
在本實施例的照明系統100中，二維非等向性擴散片120使雷射光束60在慢速軸的方向上有較大的發散角增加程度，進而使得照射於波長轉換元件130上的光斑較為近似圓形光斑，且其分佈較為近似朗伯分佈(Lambertian distribution)。如此一來，照明系統100便可提供較為均勻的照明，且照射於波長轉換元件130上的光斑較不會因為中心強度過強，而導致波長轉換元件130的轉換效率飽和而難以提升，或導致波長轉換元件130燒損。因此，本實施例的投影裝置200可提供較佳的影像品質，且具有較佳的光效率與較長的使用壽命。另外，本實施例的照明系統100可採用一片二維非等向性擴散片120就達到上述的優點與功效，因此本實施例的照明系統100具有簡單的架構。 In the illumination system 100 of the present embodiment, the two-dimensional anisotropic diffusion sheet 120 causes the laser beam 60 to have a large degree of divergence angle increase in the direction of the slow axis, thereby causing illumination onto the wavelength conversion element 130. The spot is more similar to a circular spot, and its distribution is similar to the Lambertian distribution. In this way, the illumination system 100 can provide relatively uniform illumination, and the spot on the wavelength conversion component 130 is less likely to be too strong, so that the conversion efficiency of the wavelength conversion component 130 is saturated and difficult to increase, or The wavelength conversion element 130 is burned. Therefore, the projection apparatus 200 of the present embodiment can provide better image quality, and has better light efficiency and a longer service life. In addition, the illumination system 100 of the present embodiment can achieve the above advantages and effects by using a two-dimensional anisotropic diffusion sheet 120. Therefore, the illumination system 100 of the present embodiment has a simple architecture.
此外，經由二維非等向性擴散片120的作用後，雷射光束60於光均勻化元件170上所形成的光斑近似於圓形且約略呈朗 伯分佈，且轉換光束70於光均勻化元件170上所形成的光斑亦近似於圓形且約略呈朗伯分佈，因此不同顏色的雷射光束60與轉換光束70在進入光均勻化元件170時的條件彼此近似，因此雷射光束60與轉換光束70可提供顏色較為均勻的照明至光閥210。所以，本實施例之投影裝置200所形成的影像可具有較為均勻的顏色。 In addition, after the action of the two-dimensional anisotropic diffusion sheet 120, the spot formed by the laser beam 60 on the light homogenizing element 170 is approximately circular and approximately sleek. The primary distribution, and the spot formed by the converted beam 70 on the light homogenizing element 170 is also approximately circular and approximately Lambertian, such that the differently colored laser beam 60 and converted beam 70 enter the light homogenizing element 170. The conditions are similar to each other, so the laser beam 60 and the converted beam 70 can provide a relatively uniform color illumination to the light valve 210. Therefore, the image formed by the projection device 200 of the embodiment may have a relatively uniform color.
在本實施例中，照明系統100更包括一致動器180，連接至二維非等向性擴散片120，且用以驅使二維非等向性擴散片120運動。此外，在本實施例中，致動器180驅使二維非等向性擴散片120平移振動，例如沿著x方向來回地振動。然而，在其他實施例中，致動器180亦可以驅使二維非等向性擴散片120沿著y方向或其他適當方向來回地振動。平移振動中的二維非等向性擴散片120可使雷射光束60的光強度分佈更近似於朗伯分佈，且可抑制雷射光束60在屏幕上所產生的散斑(speckle)現象，進而使影像畫面的品質提升。在其他實施例中，照明系統100亦可以不包含致動器180，而二維非等向性擴散片120為固定式光學膜片。 In the present embodiment, the illumination system 100 further includes an actuator 180 coupled to the two-dimensional anisotropic diffusion sheet 120 for driving the two-dimensional anisotropic diffusion sheet 120 to move. Further, in the present embodiment, the actuator 180 drives the two-dimensional anisotropic diffusion sheet 120 to vibrate, for example, to vibrate back and forth along the x direction. However, in other embodiments, the actuator 180 can also urge the two-dimensional anisotropic diffuser 120 to vibrate back and forth along the y-direction or other suitable direction. The two-dimensional anisotropic diffusion sheet 120 in the translational vibration can make the light intensity distribution of the laser beam 60 more similar to the Lambertian distribution, and can suppress the speckle phenomenon generated by the laser beam 60 on the screen. In turn, the quality of the image is improved. In other embodiments, the illumination system 100 may also not include the actuator 180, and the two-dimensional anisotropic diffusion sheet 120 is a fixed optical film.
圖3A為圖1中的二維非等向性擴散片的一種實施例的立體示意圖，而圖3B為圖3A中的二維非等向性擴散片的剖面示意圖。請參照圖1、圖3A與圖3B，圖1之二維非等向性擴散片120的一實施例可以是如圖3A與3B之二維非等向性擴散片120a，但本發明不以此為限。在本實施例中，二維非等向性擴散片120a具有相對之一第一表面122與一第二表面124，其中第一表面122 例如為背對雷射光源110的出光面，而第二表面124例如為朝向雷射光源110的入光面。二維非等向性擴散片120a的第一表面122與第二表面124的至少其中之一(圖3B中是以第一表面122為例)具有多個橢球狀凹槽126。每一橢球狀凹槽126的長軸A3實質上與雷射光束60的快速軸正交。在圖3A中，亦示意性地繪示了雷射光束60照射於二維非等向性擴散片120a上時所形成的光斑50，其中光斑50的長軸A1平行於雷射光束60的快速軸，且光斑50的短軸A2平行於雷射光束60的慢速軸，其中長軸A1垂直於短軸A2，且長軸A1實質上垂直於每一橢球狀凹槽126的長軸A3。另外，橢球狀凹槽126的短軸A4實質上垂直於橢球狀凹槽126的長軸A3。在本實施例中，每一橢球狀凹槽126例如為半橢球狀凹槽126。然而，在其他實施例中，每一橢球狀凹槽126亦可以是橢球的一部分之形狀的凹槽。在本實施例中，橢球狀凹槽126散佈於二維非等向性擴散片120a的第一表面122與第二表面124的至少其中之一，例如佈滿第一表面122與第二表面124的至少其中之一。 3A is a perspective view of an embodiment of the two-dimensional anisotropic diffusion sheet of FIG. 1, and FIG. 3B is a schematic cross-sectional view of the two-dimensional anisotropic diffusion sheet of FIG. 3A. Referring to FIG. 1 , FIG. 3A and FIG. 3B , an embodiment of the two-dimensional anisotropic diffusion sheet 120 of FIG. 1 may be a two-dimensional anisotropic diffusion sheet 120 a as shown in FIGS. 3A and 3B , but the present invention does not This is limited. In this embodiment, the two-dimensional anisotropic diffusion sheet 120a has a first surface 122 and a second surface 124, wherein the first surface 122 For example, the light exit surface facing away from the laser light source 110, and the second surface 124 is, for example, a light incident surface facing the laser light source 110. At least one of the first surface 122 and the second surface 124 of the two-dimensional anisotropic diffusion sheet 120a (the first surface 122 is exemplified in FIG. 3B) has a plurality of ellipsoidal grooves 126. The major axis A3 of each ellipsoidal groove 126 is substantially orthogonal to the fast axis of the laser beam 60. In FIG. 3A, the spot 50 formed when the laser beam 60 is irradiated onto the two-dimensional anisotropic diffusion sheet 120a is also schematically illustrated, wherein the long axis A1 of the spot 50 is parallel to the laser beam 60. The axis, and the minor axis A2 of the spot 50 is parallel to the slow axis of the laser beam 60, wherein the major axis A1 is perpendicular to the minor axis A2 and the major axis A1 is substantially perpendicular to the major axis A3 of each ellipsoidal groove 126 . Additionally, the minor axis A4 of the ellipsoidal groove 126 is substantially perpendicular to the major axis A3 of the ellipsoidal groove 126. In the present embodiment, each ellipsoidal groove 126 is, for example, a semi-ellipsoidal groove 126. However, in other embodiments, each ellipsoidal groove 126 may also be a groove in the shape of a portion of an ellipsoid. In the present embodiment, the ellipsoidal groove 126 is interspersed with at least one of the first surface 122 and the second surface 124 of the two-dimensional anisotropic diffusion sheet 120a, for example, the first surface 122 and the second surface are covered. At least one of 124.
由於每一橢球狀凹槽126的長軸A3實質上與雷射光束60的快速軸正交，亦即每一橢球狀凹槽126的長軸A3實質上平行於雷射光束60的慢速軸，因此二維非等向性擴散片120a可使雷射光束60在慢速軸的方向上有較大的發散角增加程度。 Since the major axis A3 of each ellipsoidal groove 126 is substantially orthogonal to the fast axis of the laser beam 60, that is, the major axis A3 of each ellipsoidal groove 126 is substantially parallel to the slowness of the laser beam 60. The speed axis, and thus the two-dimensional anisotropic diffuser 120a, allows the laser beam 60 to have a greater degree of divergence angle increase in the direction of the slow axis.
綜上所述，本發明的實施例可達到下列優點與功效的至少其中之一。在本發明的實施例的照明系統與投影裝置中，二維 非等向性擴散片使雷射光束在慢速軸的方向上有較大的發散角增加程度，進而使得照射於波長轉換元件上的光斑較為近似圓形光斑，且其分佈較為近似朗伯分佈。如此一來，照明系統便可提供較為均勻的照明，且照射於波長轉換元件上的光斑較不會因為中心強度過強，而導致波長轉換元件的轉換效率飽和而難以提升，或導致波長轉換元件燒損。因此，本發明的實施例的投影裝置可提供較佳的影像品質，且具有較佳的光效率與較長的使用壽命。 In summary, the embodiments of the present invention can achieve at least one of the following advantages and effects. In the illumination system and projection device of the embodiment of the present invention, two-dimensional The anisotropic diffuser increases the divergence angle of the laser beam in the direction of the slow axis, so that the spot irradiated on the wavelength conversion element is more approximate to a circular spot, and its distribution is similar to the Lambertian distribution. . In this way, the illumination system can provide relatively uniform illumination, and the spot irradiated on the wavelength conversion component is less likely to be too strong due to the center strength, so that the conversion efficiency of the wavelength conversion component is saturated and difficult to be improved, or the wavelength conversion component is caused. Burnt. Therefore, the projection apparatus of the embodiment of the present invention can provide better image quality, and has better light efficiency and a longer service life.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。另外本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外，摘要部分和標題僅是用來輔助專利文件搜尋之用，並非用來限制本發明之權利範圍。另外，說明書中提及的第一、第二..等用語，僅用以表示元件的名稱，並非用來限制元件數量上的上限或下限。 The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms first, second, etc. mentioned in the specification are only used to indicate the names of the components, and are not intended to limit the upper or lower limits of the number of components.
60‧‧‧雷射光束 60‧‧‧Laser beam
70‧‧‧轉換光束 70‧‧‧Converting beam
80‧‧‧影像光束 80‧‧‧Image beam
90、141、143、145‧‧‧透鏡 90, 141, 143, 145‧‧ lens
92‧‧‧反射鏡 92‧‧‧Mirror
94‧‧‧聚光透鏡 94‧‧‧ Concentrating lens
100‧‧‧照明系統 100‧‧‧Lighting system
110‧‧‧雷射光源 110‧‧‧Laser light source
120‧‧‧二維非等向性擴散片 120‧‧‧Two-dimensional anisotropic diffuser
130‧‧‧波長轉換元件 130‧‧‧wavelength conversion components
150‧‧‧合光單元 150‧‧‧Hybrid unit
160‧‧‧光傳遞模組 160‧‧‧Light Transfer Module
170‧‧‧光均勻化元件 170‧‧‧Light homogenizing components
180‧‧‧致動器 180‧‧‧Actuator
200‧‧‧投影裝置 200‧‧‧Projection device
210‧‧‧光閥 210‧‧‧Light valve
220‧‧‧投影鏡頭 220‧‧‧Projection lens
x、y、z‧‧‧方向 x, y, z‧‧ direction
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| JP6380813B2 (en) * | 2015-12-24 | 2018-08-29 | カシオ計算機株式会社 | Light source device and projection device |
| TWI592609B (en) | 2015-12-30 | 2017-07-21 | 中強光電股份有限公司 | Illumination system and projection apparatus |
| CN106324964A (en) * | 2016-11-16 | 2017-01-11 | 四川长虹电器股份有限公司 | Efficient laser projection system |
| CN106595481B (en) * | 2016-12-14 | 2019-05-07 | 海信集团有限公司 | The facula measurement method and device of laser projection system |
| CN106595482B (en) * | 2016-12-14 | 2019-06-04 | 海信集团有限公司 | The facula measurement method and device of laser projection system |
| CN106773494A (en) * | 2017-03-27 | 2017-05-31 | 李龙 | A kind of optical projection system |
| CN109459906B (en) * | 2017-09-06 | 2022-02-25 | 扬明光学股份有限公司 | Optical system |
| CN110133950A (en) * | 2018-02-09 | 2019-08-16 | 中强光电股份有限公司 | Lighting system and projection arrangement |
| JPWO2021149573A1 (en) * | 2020-01-20 | 2021-07-29 | ||
| CN214122670U (en) | 2021-02-23 | 2021-09-03 | 中强光电股份有限公司 | Light-homogenizing module and projection device |
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| US6870650B2 (en) | 2000-08-01 | 2005-03-22 | Riake Corporation | Illumination device and method for laser projector |
| US7554737B2 (en) * | 2000-12-20 | 2009-06-30 | Riake Corporation | Illumination device and method using adaptable source and output format |
| KR20060037389A (en) | 2003-07-22 | 2006-05-03 | 마츠시타 덴끼 산교 가부시키가이샤 | Two-dimensional image forming apparatus |
| JP4902528B2 (en) * | 2004-05-05 | 2012-03-21 | アイマックス コーポレイション | Multi-light source high-performance stereoscopic projection system |
| WO2007108504A1 (en) | 2006-03-23 | 2007-09-27 | Matsushita Electric Industrial Co., Ltd. | Projection type display device and light source device |
| TWI300834B (en) * | 2006-06-14 | 2008-09-11 | Young Optics Inc | Illumination system and projection apparatus |
| TWI359282B (en) * | 2007-10-09 | 2012-03-01 | Coretronic Corp | Projector |
| US8109638B2 (en) * | 2008-01-22 | 2012-02-07 | Alcatel Lucent | Diffuser configuration for an image projector |
| ATE478357T1 (en) | 2008-04-15 | 2010-09-15 | Jds Uniphase Corp | WAVELENGTH PLATE BASED DEVICE AND METHOD FOR REDUCING SPECKLES IN LASER ILLUMINATION SYSTEMS |
| JP2011164151A (en) | 2010-02-04 | 2011-08-25 | Sony Corp | Illumination device and projection type image display device |
| JP5767444B2 (en) | 2010-06-16 | 2015-08-19 | ソニー株式会社 | Light source device and image projection device |
| WO2011161931A1 (en) | 2010-06-22 | 2011-12-29 | パナソニック株式会社 | Laser projector |
| TWI418916B (en) | 2010-10-14 | 2013-12-11 | Young Optics Inc | Projection apparatus |
| JP5648556B2 (en) * | 2011-03-28 | 2015-01-07 | ソニー株式会社 | Illumination device, projection display device, and direct view display device |
| JP5978612B2 (en) * | 2011-07-13 | 2016-08-24 | ソニー株式会社 | Illumination device and display device |
| CN103062672B (en) * | 2011-10-21 | 2015-03-11 | 中强光电股份有限公司 | Lighting system and projection device |
| TWI509344B (en) * | 2013-09-18 | 2015-11-21 | Coretronic Corp | Illumination system and projection apparatus |
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